Compressor mechanism



Aprifi 9, 1929. F. D. HOLDSWORTH 708,175

COMPRESSOR MECHANISM Filed Dec. 16, 1924 2 Sheets-Sheet 1 EJMSJ 75 April 9, 1929. F. D. HOLDSWORTH COMPRESSOR MECHANISM Filed Dec. 16, 1924 2 Sheets-Sheet 2 Patented A 9, Egg airs FEED D. I-IOLDSWORTI-I, OF CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

COMPRESSOR MECHANISM.

Application filed December 16, 1924. Serial No. 756,278.

This invention relates to compressormechanism.

It has forits object to provide an improved compressor mechanism. A further object is to provide an improved portable compressor mechanism particularly adapted for mines. The several elements which go to make up the portable compressor are so arranged that the maximum height of the device will be 8X- tremely low and it is preferable that the height will not exceed the maximum height of one of the elements which is already of minimum height. Such an element herein specifically comprises the electric driving motor for the compressor, but it will be clear.

that any other element might be chosen. It is especially desirable that an extremely low compressor outfit be provided, for it will be understood that this outfit must operate at times in coal seams which are extremely low. It is accordingly the further object of my invention to provide an improved arrangement of parts by which an extren'iely low and compact outfit is obtained. It i. also a further object to provide in a portable mine compressor an improved compressor having an improved arrangement with respect to the truck frame upon which the several elements are arranged. Herein the compressor is of the two cylinder opposed. type disposed transversely of the truck-frame and tracks upon which the truck is mounted, thus reducing vibration of the truck to a minin'ium and permitting the more successful use of a transverse reciprocatory type of compressor. However, my improved arrangement also permits the more successful use of an ordinary type of single cylinder compressor, if arranged to have the piston thereof reciprocate in a transverse direction. The inherent unbalance of this type of compressor would tend to cause transverse movement of the truck, but the rails would tend to hold the same against any appreciable amount of movement, therebycutting down vibration. While my improved arrangement is well adapted tothis single cylinder type of compressor, yet by employing an opposed type of compressor, still .furth'e'r advantages are obtainable. For instance, in some cases, the tracks may be old and improperly spiked in which case the single cylinder compressor would only make matters worse, for there would be a tendency to shove-the rails laterally or possibly to spread the same if the compressor outfit should remain in a single'position any length of time. It will thus be seen that it is highly desirable to reduce the maximum amount of transverse vibration in thesecases, but it is also highly desirable to use a transversely disposed compressor in order to obtain the compact arrangement.

This dual result, among others, is obtained by the use of an. opposed compressor of the general type herein shown. My improved arrangement also permits the ready adaptation of the usual auxiliary elements such as the cooling water tank for the compressor, the electric controller box for the compressor motor, and also the positioning of the air receiver. To further accomplish the compact arrangement it has been found desirable to suspend certain ofthe elements so as to extend below the level of the truck frame and in some instances to mount the frame upon dropped axles, thus rendering the device extremely low and compact.

In the accompanying drawings I have shown for purposes of illustration oneform which my invent-ion may assume in practice.

In these drawings,

I Fig. 1 is a plan. view of the assembled mine compressor.

Fig. 2 is a side elevation thereof.

Fig. 3 is a vertical section taken on line 33 of Fig. 1.

Fig. 4 is a fragmentary View of a drop axle.

Fig. 5 is a View of a straight axle.

Fig. 6 is a view showing a wheel mounting adapted for narrow gage tracks.

Fig. 7 is a detail view showing my im-' proved means for supporting one of the compressor elements.

In the illustrative embodiment of my invention I have shown a truck frame 1 hav. ing usual side flanges 2, end flanges 3, and a bottom portion 5 upon which the several elements of the compressor may be mounted. lVhile most of the elements of the compressor outfit may be supported at the level of the frame, it will be understood that the bottom 5 may have cut out portions in order to allow certain of the elements to project through said openings to below the level of the frame,

thereby obtaining a rather low construction.

The term prevailing level of the frame which is used in the claims is meant to specify the level at which most of the elements of the. compressor outfit are carried. Usual coujlin elements 6 are carried on each of the ,"tl'ie truck frame approuima motor andjlaterally thereof for mg; of other necessary flilXlilliY elements,

'this'mol'or may he oi any usual type butis quhierzihiy oi" he slow speed type ada iitcd to be directly commuted to a. i.iflDHVOPHC-ly disposed compressor 11, as through a. usual fly wheel connection The (.Olllpl'CSFwQl 1i 'liereinis of the two-ryliiulcr opposed type having a crank case iii dis csed cei'itrallv oi by in the c er tl'mrcof. Mounted on oppositesides oi. crank case-arecylinders 141- and i: whos-se longitudinal axes are oiisci; from each their in order to obtain the opposed rwiii firocating action of the ijiistons l6 and l? actuat ad by a suitable two-throw crank shaft 18 which as before nn-wntioued is directly connected to the -drningj motor 10. Usual type of uuioadiug u'ie'clnuiisins lfland 20 are mounted on the cylinder heads. This type of unloadiinr mechanism is more fully disclosed iiied Apiwl l, 1924 and is particularly adaiued to my present arrangement in that the longitudinal axis thereoi extends vertically. The iuiloadiius; mechanisms are of the air coutrolled type actuated by pressurefluid from a receiver 21 as by suitable pipe connections 22 and 23 leading from a pilot valve 2% of any usual type, in turn connected to the receivor by a pi pc 25. Fluid conducting means constituting; pipes and 41. lead from the resi iective cylinders to a receiver 21 "from which leads a usual diuchargrcpipe 4-2.

It will be noted that the receiver is disposed transversely of the truck frame and set below the upper edge of the flanges thereof as is also the motor and compressor. Suitable vertical abutments 26 are provided on the bottom 5 upon which the receiver to thereby steady and, support the same. Ti lie receiver is held in placeby an inverted. U-

shapedbolt passing over the top thereof and the tree oi which. extend through th bottom I and are held by nuts 26' on the lower sideo'i the bottom 5 of the frantic.

With the :u'rangrcmcnt thus far it will be seen that the motor,compressor and receiver providein e'tlect a T-shaped arrzuuzoment thus leaving ample space pa. i the the positionsuch as a water cooler 27 connected to the ci'iohn ackets of the coniipressor:cylinh I but) 8 iulapted to run in my cos peruhne; application, ever. No. 406,583.

ders. As shown herein, an outflow pipe 29 is connected to a usual circulating pump 30, the pump pulley 33 being driven by a belt 31 driven from. a flywheel pulley 32, Leading to the lower side of the cylinder 15 "from the pump is the pipe 34, while leading; from the upper side of said cylinder to 'the lower side of the cylinder 1.4 is a pipe 85. A returirpip "36 leads from the upper side of the'cylinder 1.4. to thecooling: tank 27. Qt'will thus be seen that thetra." orso disposition of the con'ipressor allows a VCIYCOTH- pact arrangen'ient oi the piping; just men-- 'tioned and means for (lllvlflfi, the circulatnug' pun'ip. On the side oft-he motor opposite; the

cooling; tank 27 is (lisposed the motor cons troller SZand any other necessary electrical equipment.

It will thus be seen that myinu iroved arrangement permits reduction of the eve -all dii'uensious oi? the truck, and yet by the use oi a transversely disposed compressor any tendency to shake the compressor outfit reduced to a mmi-mun'i. By the use 01" anopposed type compressor any tendency to spread. the tracks or loosen thouame Isa-lee reduced to a nununun'i, if: not who lycl1minated' while the particulararran 'e rent of the directly counec ed motor, although it will be understood that direct connection is not necessary, brings about a very well balanced 'machine which is approxin'uitcly symmetri-- cally l; alanced with respect to the longitudh nal Thus this arrangementdistril'uites the load equally on each track, and alsoa icu mits the ready adaptation oi the other ncc ssary auxiliary elements such-as the "eooli 1;

water tank and the cctrical apparatus.

In Fig. 51 have showna modified form oil": wheel. mounting comprising a straigrht axle 4 3; whereas in Fig. 6 lhave'shown a wheel mountingcomprisingsjaced wheel supports 41 i carried on the lower sideof the bottom 5 oi? the ironic 1. This latter construction is particularly adapted for i'rarroungage tracks or whereit might be desired to Vary the gage oi: the wheels.v i

' l/Vhile I have in this-application specifically described several forms whichmy invention may'assume in practice, it will be undcrst ed that these 'forms o1 thesam'e -are shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope ofthe appended claims. p

7 What I claim as new'and desireto secure by Letters Patent is:

'1. Ina portable compressor mechanism a portable base frame, a horizontal motor 1 mountedthereon and disposed inthe'longitudinal' center thereof, a horizontal compressor driven'by said motor, said compressor having horizontal cylinders extending transversely at each side of the longitudmalcenter of said frame, and a transversely disposed tank for receiving the fluid discharged from upper portion of said frame and within said recessed portion, the combined height of said base frame and said motor determining the height of the mechanism.

3. In a portable compressor mechanism, a portable base frame having wheeled axles and a platform, said axles and platform being in substantially the same horizontal plane, a horizontal motor mounted on said platform and having a. portion thereof depending be low the same, a horizontal compressor driven by said motor, and a horizontally disposed tank for receiving the fluid discharged from said compressor.

4. In a portable compressor mechanism, a portable'base frame having wheeled axles and a platform, said axles and platform being in substantially the same horizontal plane, a horizontal motor mounted on said platform and having a portion thereof extending through said platform to a point below a horizontal plane including the axes of said wheels, a horizontal compressor driven by said motor, and a horizontally disposed tank for receiving the fluid discharged from said compressor, the combined height of said base frame and motordetermining the height of the mechanism.

5. In a portable compressor mechanism, a base frame comprising supporting Wheels movable over a trackway, said frame providing a supporting surface substantially at the level of the axes of said supporting wheels, a compressor thereon, and a driving motor for said compressor supported by said frame so that the motor base is substantially as low as the axes of the wheels of said frame, said compressor being mounted on said supporting surface and extending only within the vertical limits of the motor.

6. In a portable compressor mechanism, a base frame comprising supporting wheels movable over a trackway, said frame providing a supporting surface substantially at the level of the axes of said supporting wheels, a compressor element thereon, and a driving motor element therefor, said frame being formed with an opening through which a portion of the taller of said elements projects, the other of said elements being mounted on said supporting surface so that the same is disposed within the vertical limits of that one of said elements which extends through said frame.

7. In a portable compressor mechanism, a

portable base frame, a horizontal motor mounted thereon and disposed 1n the longitudinal center thereof, a horizontal compressor driven by said motor, said compressor having horizontal cylinders extending transversely at each side of the longitudinal center of said frame, and a transversely disposed tank for receiving the fluid discharged from said compressor.

p 8. In a portable compressor mechanism, a portable base frame having a recessed portion, a horizontal motor thereon, a horizontal-cylindered compressor driven by said motor, and a horizontally disposed tank for receiving the fluid discharged from said compressor, said motor, compressor, and tank being disposed below the upper portion of said frame and within'said recessed portion.

In testimony whereof I ai'fix my signature.

FRED D. HOLDSWORTH. 

